Finding the Fourth Proportional to 6,442.72, 9,664.56 and 1,826.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,442.72 : 9,664.56 = 1,826.08 : x
2. Step 2: Convert to fraction form
   6,442.72/9,664.56 = 1,826.08/x
3. Step 3: Cross multiply
   6,442.72x = 9,664.56 × 1,826.08
4. Step 4: Simplify right side
   6,442.72x = 17,648,259.72
5. Step 5: Solve for x
   x = 17,648,259.72/6,442.72
6. Step 6: Final answer
   x = 2,739.26